acct

ACCT(2)                     Linux Programmer's Manual                    ACCT(2)



NAME
       acct - switch process accounting on or off

SYNOPSIS
       #include <unistd.h>

       int acct(const char *filename);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       acct():
           Since glibc 2.21:
               _DEFAULT_SOURCE
           In glibc 2.19 and 2.20:
               _DEFAULT_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)
           Up to and including glibc 2.19:
               _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)

DESCRIPTION
       The acct() system call enables or disables process accounting.  If called
       with the name of an existing file as its argument, accounting is turned
       on, and records for each terminating process are appended to filename as
       it terminates.  An argument of NULL causes accounting to be turned off.

RETURN VALUE
       On success, zero is returned.  On error, -1 is returned, and errno is set
       to indicate the error.

ERRORS
       EACCES Write permission is denied for the specified file, or search
              permission is denied for one of the directories in the path prefix
              of filename (see also path_resolution(7)), or filename is not a
              regular file.

       EFAULT filename points outside your accessible address space.

       EIO    Error writing to the file filename.

       EISDIR filename is a directory.

       ELOOP  Too many symbolic links were encountered in resolving filename.

       ENAMETOOLONG
              filename was too long.

       ENFILE The system-wide limit on the total number of open files has been
              reached.

       ENOENT The specified file does not exist.

       ENOMEM Out of memory.

       ENOSYS BSD process accounting has not been enabled when the operating
              system kernel was compiled.  The kernel configuration parameter
              controlling this feature is CONFIG_BSD_PROCESS_ACCT.

       ENOTDIR
              A component used as a directory in filename is not in fact a
              directory.

       EPERM  The calling process has insufficient privilege to enable process
              accounting.  On Linux, the CAP_SYS_PACCT capability is required.

       EROFS  filename refers to a file on a read-only filesystem.

       EUSERS There are no more free file structures or we ran out of memory.

CONFORMING TO
       SVr4, 4.3BSD (but not POSIX).

NOTES
       No accounting is produced for programs running when a system crash
       occurs.  In particular, nonterminating processes are never accounted for.

       The structure of the records written to the accounting file is described
       in acct(5).

SEE ALSO
       acct(5)

COLOPHON
       This page is part of release 5.13 of the Linux man-pages project.  A
       description of the project, information about reporting bugs, and the
       latest version of this page, can be found at
       https://www.kernel.org/doc/man-pages/.



Linux                              2021-03-22                            ACCT(2)